diff --git a/firmware/basic/ecc.h b/firmware/basic/ecc.h
index 05b1d3b..a99c173 100644
--- a/firmware/basic/ecc.h
+++ b/firmware/basic/ecc.h
@@ -1,5 +1,6 @@
 #ifndef _ECC_H_
 #define _ECC_H_H
+#include <sysdefs.h>
 #include <stdint.h>
 
 /******************************************************************************/